CN116347529A - Method for reserving resources of auxiliary node, base station, auxiliary node and communication system - Google Patents
Method for reserving resources of auxiliary node, base station, auxiliary node and communication system Download PDFInfo
- Publication number
- CN116347529A CN116347529A CN202111579918.2A CN202111579918A CN116347529A CN 116347529 A CN116347529 A CN 116347529A CN 202111579918 A CN202111579918 A CN 202111579918A CN 116347529 A CN116347529 A CN 116347529A
- Authority
- CN
- China
- Prior art keywords
- base station
- candidate target
- terminal
- auxiliary
- node
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000004891 communication Methods 0.000 title claims abstract description 11
- 238000005259 measurement Methods 0.000 claims description 22
- 230000004044 response Effects 0.000 claims description 19
- 238000003860 storage Methods 0.000 claims description 14
- 238000004590 computer program Methods 0.000 claims description 11
- 239000000872 buffer Substances 0.000 claims description 9
- 230000009977 dual effect Effects 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 16
- 230000011664 signaling Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The disclosure provides a method for reserving resources by an auxiliary node, a base station, the auxiliary node and a communication system, and relates to the field of wireless communication. Under the condition that the source base station triggers a conditional switching request and the candidate target base station configures an auxiliary cell group, the candidate target base station sends an auxiliary node adding request message to the candidate target auxiliary node, wherein the auxiliary node adding request message contains relevant information for identifying a terminal corresponding to the current auxiliary node adding request. By designing and adding auxiliary information, namely, related information for identifying the terminal corresponding to the current auxiliary node adding request, the candidate target auxiliary node is helped to identify the condition primary and auxiliary cell changing flow belonging to the same terminal, the number of reserved cache resources of the candidate target auxiliary node is reduced, and network cache overload caused by repeated resource reservation is avoided.
Description
Technical Field
The disclosure relates to the field of wireless communication, and in particular relates to a method for reserving resources by an auxiliary node, a base station, the auxiliary node and a communication system.
Background
In the 3GPP (3 rd Generation Partnership Project third generation partnership project) R16 phase, in order to improve the robustness of terminal handover, a conditional handover (Conditional Handover, CHO) mechanism is introduced. In the switching mode, after receiving CHO configuration, the terminal starts to evaluate the switching execution condition, and when the terminal evaluates that one or more conditions for switching execution are met, the terminal directly triggers the switching execution stage to initiate random access to the target base station. In this way, the reliability of the handover procedure is improved.
In the 3GPP R17 stage, a similar mechanism is also introduced into a primary and Secondary cell (Primary Secondry Cell, PScell) changing flow in an MRDC (Multi-Radio Access Technology Dual Connectivity, multi-radio access technology dual-connection) scene, named as a conditional primary and Secondary cell changing (Conditional PScell Change, CPC) flow, wherein a candidate target base station configures a Secondary cell group (Secondry Cell Group, SCG), the purpose of the flow is to improve the success rate of primary and Secondary cell changing, the core idea is that a network configures User Equipment (User Equipment) through radio resource control (Radio Resource Control, RRC) signaling to perform the conditional primary and Secondary cell changing flow, the UE initiates a synchronization process with a candidate Secondary Node according to the received signal quality of surrounding candidate Secondary Node (SN) cells, and the measurement report does not need to be reported to the network when the cell of the candidate Secondary Node meets a configuration threshold, thereby effectively improving the success rate of the primary and Secondary cell changing flow.
In the scenario where the secondary cell group (CHO with SCG configuration) is configured and conditional handover, there may be a case where multiple candidate target primary nodes (Master nodes, MNs) select the same candidate target secondary Node for a certain UE. In this case, the candidate target auxiliary node cannot distinguish that the multiple conditional primary and secondary cell change flows are for the same ue, and then the candidate target auxiliary node reserves multiple buffer resources for the ue and repeatedly buffers the data of the ue in the advanced data forwarding (Early data forwarding) flow.
Disclosure of Invention
The embodiment of the disclosure designs and newly adds auxiliary information, namely, related information for identifying the terminal corresponding to the current auxiliary node adding request, helps candidate target auxiliary nodes identify a conditional primary and auxiliary cell changing flow belonging to the same terminal, reduces the number of reserved cache resources of the candidate target auxiliary nodes, and avoids network cache overload caused by repeated resource reservation.
Some embodiments of the present disclosure provide a method for a secondary node to reserve resources, including: under the condition that the source base station triggers a conditional switching request and the candidate target base station configures an auxiliary cell group, the candidate target base station sends an auxiliary node adding request message to the candidate target auxiliary node, wherein the auxiliary node adding request message contains relevant information for identifying a terminal corresponding to the current auxiliary node adding request.
In some embodiments, the source base station is a source master node in a multi-radio access technology dual connectivity MRDC scenario, and the candidate target base station is a candidate target master node in an MRDC scenario.
In some embodiments, when a candidate target auxiliary node receives a plurality of auxiliary node adding requests corresponding to the same terminal, only one part of buffer resource is reserved for the terminal.
In some embodiments, if the relevant information for identifying the terminal corresponding to the current auxiliary node addition request and the relevant information for identifying the terminal corresponding to the current auxiliary node addition request, which are contained in the other one or more auxiliary node addition request messages, are contained in an auxiliary node addition request message received by a candidate target auxiliary node indicate the same terminal, the candidate target auxiliary node determines that the auxiliary node addition requests correspond to the same terminal.
In some embodiments, the relevant information for identifying the terminal corresponding to the current secondary node addition request is: terminal identification information; or, a combination of source base station identification information and terminal identification information; or the source base station generates the identification information capable of uniquely identifying the terminal.
In some embodiments, further comprising: the source base station configures the terminal to perform relevant measurement and receives a measurement report reported by the terminal; the source base station sends a switching request message containing conditional switching indication information to the candidate target base station according to the measurement report; the source base station receives a switching request response message fed back by the candidate target base station, wherein the switching request response message comprises a condition switching and related configuration of the auxiliary cell group, and the related configuration comprises a threshold value for triggering the condition switching and physical cell identification information of the auxiliary cell group.
In some embodiments, further comprising: and the source base station sends the relevant configuration of the condition switching and the auxiliary cell group to the terminal, wherein the relevant configuration comprises a threshold value for triggering the condition switching and physical cell identification information of the auxiliary cell group, so that when the terminal determines that the access condition is met, random access is initiated to the candidate target auxiliary node.
In some embodiments, the candidate target base stations are 1 or more; the candidate target secondary nodes are 1 or more.
Some embodiments of the present disclosure provide a base station, including: a memory; and a processor coupled to the memory, the processor configured to execute a first method of secondary node reservation of resources based on instructions stored in the memory, comprising: under the condition that a source base station triggers a conditional switching request and a candidate target base station configures an auxiliary cell group, the candidate target base station is used for sending an auxiliary node adding request message to a candidate target auxiliary node, wherein the auxiliary node adding request message contains relevant information for identifying a terminal corresponding to a current auxiliary node adding request, so that the candidate target auxiliary node reserves a part of cache resources for a plurality of auxiliary node adding requests belonging to the same terminal.
In some embodiments, the relevant information for identifying the terminal corresponding to the current secondary node addition request is: terminal identification information; or, a combination of source base station identification information and terminal identification information; or the source base station generates the identification information capable of uniquely identifying the terminal.
In some embodiments, the first method performed by the processor for the secondary node to reserve resources further comprises: the method comprises the steps that a source base station is used for configuring a terminal to perform relevant measurement, and a measurement report reported by the terminal is received; according to the measurement report, sending a switching request message containing conditional switching indication information to a candidate target base station; and receiving a switching request response message fed back by the candidate target base station, wherein the switching request response message comprises a relevant configuration of conditional switching and the auxiliary cell group, and the relevant configuration comprises a threshold value for triggering conditional switching and physical cell identification information of the auxiliary cell group.
In some embodiments, the first method performed by the processor for the secondary node to reserve resources further comprises: and the source base station is used for sending the relevant configuration of the condition switching and the auxiliary cell group to the terminal, wherein the relevant configuration comprises a threshold value for triggering the condition switching and physical cell identification information of the auxiliary cell group, so that when the terminal determines that the access condition is met, random access is initiated to the candidate target auxiliary node.
Some embodiments of the present disclosure propose a secondary node comprising: a memory; and a processor coupled to the memory, the processor configured to execute a second method of secondary node reservation of resources based on instructions stored in the memory, comprising: under the condition that a source base station triggers a conditional switching request and a candidate target base station is configured with an auxiliary cell group, receiving an auxiliary node adding request message sent by the candidate target base station as a candidate target auxiliary node, wherein the auxiliary node adding request message contains relevant information for identifying a terminal corresponding to a current auxiliary node adding request; when receiving a plurality of auxiliary node adding requests corresponding to the same terminal, only reserving one part of buffer resource for the terminal.
In some embodiments, the second method performed by the processor for the secondary node to reserve resources further comprises: and if the related information for identifying the terminal corresponding to the current auxiliary node adding request and the related information for identifying the terminal corresponding to the current auxiliary node adding request, which are contained in one auxiliary node adding request message received as the candidate target auxiliary node, indicate the same terminal, which is contained in one or more other auxiliary node adding request messages, judging that the auxiliary node adding requests correspond to the same terminal.
Some embodiments of the present disclosure propose a communication system comprising: base station and auxiliary node.
Some embodiments of the present disclosure propose a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the method of the secondary node to reserve resources.
Drawings
The drawings that are required for use in the description of the embodiments or the related art will be briefly described below. The present disclosure will be more clearly understood from the following detailed description with reference to the accompanying drawings.
It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without inventive faculty.
Fig. 1 shows a schematic diagram of conditional switching and configured secondary cell groups in an MRDC scenario of some embodiments of the present disclosure.
Fig. 2 illustrates a schematic diagram of a method for a secondary node to reserve resources in accordance with some embodiments of the present disclosure.
Fig. 3 illustrates a schematic diagram of a base station of some embodiments of the present disclosure.
Fig. 4 illustrates a schematic diagram of a secondary node of some embodiments of the present disclosure.
Fig. 5 illustrates a schematic diagram of a communication system of some embodiments of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure.
Unless specifically stated otherwise, the descriptions of "first," "second," and the like in this disclosure are used for distinguishing between different objects and are not used for indicating a meaning of size or timing, etc.
MRDC is an operation mode in which a terminal is connected to two base stations. For example, the terminal is connected to one 4G base station (eNB) and one 5G base station (gNB), respectively. In MRDC, a base station Node whose control plane is directly connected to a core network is called MN (Master Node), and a base station Node whose control plane is not directly connected to the core network is called SN (Secondary Node).
MRDC includes a plurality of specific modes such as EN-DC, NE-DC, NR-DC and the like according to different conditions of two base stations connected by a terminal. EN-DC, i.e. LTE-NR DC, LTE (Long Term Evolution ) base station is the primary node and 5G NG (New Radio) base station is the secondary node. The NE-DC, NR-LTE DC, the NR base station is the primary node and the LTE base station is the secondary node. NR-DC, namely NR-NR DC, the primary node and the secondary node are both NR base stations. SgNB represents a secondary node in EN-DC, and SN represents a secondary node in NE-DC or NR-DC.
In a Non-independent (NSA) scenario, the MCG (Master Cell group, primary cell group) is responsible for the anchor, and the SCG (Secondary Cell group ) is not responsible for the anchor. Under MCG there are a number of cells, one of which is used to initiate an initial access, this Cell is called the PCell (Primary Cell), which as the name implies is the most "Primary" Cell within the MCG. There is also one of the most dominant cells under SCG, the PSCell, which is the cell under SCG that initiates initial access.
Fig. 1 shows a schematic diagram of conditional switching and configured secondary cell groups in an MRDC scenario of some embodiments of the present disclosure.
As shown in fig. 1, in the network scenario where the secondary cell group is configured and the condition is switched, the node to which the terminal is initially connected is { MN1, SN1}, when the terminal moves in the network, the candidate target primary node selected by MN1 is { MN2, MN3}, where the candidate target secondary node selected by MN2 is { SN3, SN4, SN5}, the candidate target secondary node selected by MN3 is { SN3, SN6}, since SN3 is in the overlapping coverage area of MN2 and MN3, both candidate target primary nodes { MN2, MN3} select SN3 as the candidate target secondary node, and initiate a secondary node addition request to SN3, and according to the existing standard protocol, SN3 cannot distinguish that the two secondary node addition request flows (SN/SgNB Addition Request) are for the same terminal, so that a resource duplicate reservation situation occurs, resulting in SN3 resource overload.
Fig. 2 illustrates a schematic diagram of a method for a secondary node to reserve resources in accordance with some embodiments of the present disclosure.
As shown in fig. 2, the method for the secondary node to reserve resources of this embodiment includes the following steps.
In step 210, the source base station configures the terminal to perform relevant measurements through RRC (Radio Resource Control ) signaling.
In step 230, the source base station sends a handover request message containing conditional handover indication information to the candidate target base station according to the measurement report, for indicating that the current handover is a conditional handover.
In some embodiments, the source base station is, for example, a source master node in an MRDC scenario, and the candidate target base stations are, for example, candidate target master nodes in an MRDC scenario.
Wherein the candidate target base stations are 1 or more.
Assuming that the candidate target base stations selected by the source base station according to the measurement report include the candidate target base station 1 and the candidate target base station 2, step 230 includes steps 230a and 230b.
In step 230a, the source base station transmits a handover request message containing conditional handover instruction information to the candidate target base station 1.
In step 230b, the source base station sends a handover request message containing conditional handover indication information to the candidate target base station 2.
The relevant information for identifying the terminal corresponding to the current auxiliary node adding request is as follows: terminal identification information; or, a combination of source base station identification information and terminal identification information; or the source base station generates the identification information capable of uniquely identifying the terminal.
Assuming that the candidate target base station includes candidate target base station 1 and candidate target base station 2, step 240 includes steps 240a and 240b.
In step 240a, the candidate target base station 1 sends an auxiliary node addition request message to the candidate target auxiliary node SN1, where the auxiliary node addition request message includes related information for identifying a terminal corresponding to the current auxiliary node addition request.
In step 240b, the candidate target base station 2 sends an auxiliary node addition request message to the candidate target auxiliary node SN1, where the auxiliary node addition request message includes related information for identifying the terminal corresponding to the current auxiliary node addition request.
Wherein the candidate target auxiliary nodes are 1 or more. So that the terminal can be changed from a single connection to a dual connection.
In step 250, the candidate target secondary node SN1 performs access control, and when receiving a plurality of secondary node addition requests corresponding to the same terminal, only reserves a part of buffer resources for the terminal.
If the relevant information for identifying the terminal corresponding to the current auxiliary node adding request and the relevant information for identifying the terminal corresponding to the current auxiliary node adding request, which are contained in one auxiliary node adding request message received by a candidate target auxiliary node, indicate the same terminal, the candidate target auxiliary node judges that the auxiliary node adding requests correspond to the same terminal.
Assuming that the candidate target base stations include candidate target base station 1 and candidate target base station 2, step 260 includes steps 260a and 260b.
In step 260a, the candidate target base station 1 receives the secondary node addition request response message fed back by the candidate target secondary node SN1 for the secondary node addition request message of the candidate target base station 1. In step 260b, the candidate target base station 2 receives the secondary node addition request response message fed back by the candidate target secondary node SN1 for the secondary node addition request message of the candidate target base station 2.
Assuming that the candidate target base station includes candidate target base station 1 and candidate target base station 2, step 270 includes steps 270a and 270b.
In step 270a, the source base station receives a handover request response message fed back by the candidate target base station 1, where the handover request response message includes a relevant configuration of the conditional handover and the secondary cell group, and the relevant configuration includes a threshold value for triggering the conditional handover, physical cell identification information of the secondary cell group, and the like.
In step 270b, the source base station receives a handover request response message fed back by the candidate target base station 2, where the handover request response message includes a relevant configuration of the conditional handover and the secondary cell group, and the relevant configuration includes a threshold value for triggering the conditional handover, physical cell identification information of the secondary cell group, and the like.
In step 280, the source base station sends the relevant configuration of the condition switching and the secondary cell group to the terminal through the RRC reconfiguration signaling, where the relevant configuration includes a threshold value for triggering the condition switching and identification information of a physical cell of the secondary cell group corresponding to the SN1, so that when the terminal determines that the access condition is satisfied, random access is initiated to the candidate target secondary node SN 1.
And step 290, after the terminal successfully receives the message, feeding back an RRC reconfiguration completion message to the source base station, and receiving the RRC reconfiguration completion message fed back by the terminal by the source base station. Thus, the conditional handover preparation phase in which the secondary cell group is configured is completed.
The embodiment designs and adds the auxiliary information, namely, the related information for identifying the terminal corresponding to the current auxiliary node adding request, helps the candidate target auxiliary node to identify the condition primary and auxiliary cell changing process belonging to the same terminal, reduces the reserved buffer resource quantity of the candidate target auxiliary node, and avoids network buffer overload caused by repeated resource reservation. And the terminal indication information is newly added in the current Xn/Xn signaling, which can be well compatible with the existing protocol flow and avoid overlarge signaling overhead.
Fig. 3 illustrates a schematic diagram of a base station of some embodiments of the present disclosure.
As shown in fig. 3, the base station 300 of this embodiment includes: a memory 310 and a processor 320 coupled to the memory 310, the processor 320 configured to execute a first method of a secondary node reserving resources based on instructions stored in the memory 310, comprising: under the condition that a source base station triggers a conditional switching request and a candidate target base station configures an auxiliary cell group, the candidate target base station is used for sending an auxiliary node adding request message to a candidate target auxiliary node, wherein the auxiliary node adding request message contains relevant information for identifying a terminal corresponding to a current auxiliary node adding request, so that the candidate target auxiliary node reserves a part of cache resources for a plurality of auxiliary node adding requests belonging to the same terminal.
The first method performed by the processor 320 for reserving resources at the secondary node further includes: the method comprises the steps that a source base station is used for configuring a terminal to perform relevant measurement, and a measurement report reported by the terminal is received; according to the measurement report, sending a switching request message containing conditional switching indication information to a candidate target base station; and receiving a switching request response message fed back by the candidate target base station, wherein the switching request response message comprises a relevant configuration of conditional switching and the auxiliary cell group, and the relevant configuration comprises a threshold value for triggering conditional switching and physical cell identification information of the auxiliary cell group.
The first method performed by the processor 320 for reserving resources at the secondary node further includes: and the source base station is used for sending the relevant configuration of the condition switching and the auxiliary cell group to the terminal, wherein the relevant configuration comprises a threshold value for triggering the condition switching and physical cell identification information of the auxiliary cell group, so that when the terminal determines that the access condition is met, random access is initiated to the candidate target auxiliary node.
The memory 310 may include, for example, system memory, fixed nonvolatile storage media, and the like. The system memory stores, for example, an operating system, application programs, boot Loader (Boot Loader), and other programs.
The base station 300 may also include an input-output interface 330, a network interface 340, a storage interface 350, and the like. These interfaces 330, 340, 350 and the memory 310 and the processor 320 may be connected, for example, by a bus 360. The input/output interface 330 provides a connection interface for input/output devices such as a display, a mouse, a keyboard, a touch screen, and the like. Network interface 340 provides a connection interface for various networking devices. Storage interface 350 provides a connection interface for external storage devices such as SD cards, U-discs, and the like. Bus 360 can employ any of a variety of bus architectures. For example, bus structures include, but are not limited to, an industry standard architecture (Industry Standard Architecture, ISA) bus, a micro channel architecture (Micro Channel Architecture, MCA) bus, and a peripheral component interconnect (Peripheral Component Interconnect, PCI) bus.
Fig. 4 illustrates a schematic diagram of a secondary node of some embodiments of the present disclosure.
As shown in fig. 4, the secondary node 400 of this embodiment includes: a memory 410 and a processor 420 coupled to the memory 410, the processor 420 being configured to perform a second method of secondary node reservation of resources based on instructions stored in the memory 410, comprising: under the condition that a source base station triggers a conditional switching request and a candidate target base station is configured with an auxiliary cell group, receiving an auxiliary node adding request message sent by the candidate target base station as a candidate target auxiliary node, wherein the auxiliary node adding request message contains relevant information for identifying a terminal corresponding to a current auxiliary node adding request; when receiving a plurality of auxiliary node adding requests corresponding to the same terminal, only reserving one part of buffer resource for the terminal.
The second method performed by the processor 420 for reserving resources for a secondary node further includes: and if the related information for identifying the terminal corresponding to the current auxiliary node adding request and the related information for identifying the terminal corresponding to the current auxiliary node adding request, which are contained in one auxiliary node adding request message received as the candidate target auxiliary node, indicate the same terminal, which is contained in one or more other auxiliary node adding request messages, judging that the auxiliary node adding requests correspond to the same terminal.
The memory 410 may include, for example, system memory, fixed nonvolatile storage media, and the like. The system memory stores, for example, an operating system, application programs, boot Loader (Boot Loader), and other programs.
The processor 420 may be implemented as a discrete hardware component such as a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA), or other programmable logic device, discrete gates, or transistors.
The secondary node 400 may also include an input-output interface 430, a network interface 440, a storage interface 450, and the like. These interfaces 430, 440, 450 and the memory 410 and the processor 420 may be connected, for example, by a bus 460. The input/output interface 430 provides a connection interface for input/output devices such as a display, a mouse, a keyboard, a touch screen, and the like. Network interface 440 provides a connection interface for various networking devices. Storage interface 450 provides a connection interface for external storage devices such as SD cards, U-discs, and the like. Bus 460 may employ any of a variety of bus architectures. For example, bus structures include, but are not limited to, an industry standard architecture (Industry Standard Architecture, ISA) bus, a micro channel architecture (Micro Channel Architecture, MCA) bus, and a peripheral component interconnect (Peripheral Component Interconnect, PCI) bus.
Fig. 5 illustrates a schematic diagram of a communication system of some embodiments of the present disclosure.
As shown in fig. 5, the communication system 500 of this embodiment includes: the aforementioned base station 300 and the aforementioned secondary node 400.
Some embodiments of the present disclosure propose a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the method of the secondary node reservation of resources of the embodiments.
It will be appreciated by those skilled in the art that embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more non-transitory computer-readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flowchart and/or block of the flowchart illustrations and/or block diagrams, and combinations of flowcharts and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing description of the preferred embodiments of the present disclosure is not intended to limit the disclosure, but rather to enable any modification, equivalent replacement, improvement or the like, which fall within the spirit and principles of the present disclosure.
Claims (16)
1. A method for a secondary node to reserve resources, comprising:
under the condition that the source base station triggers a conditional switching request and the candidate target base station configures an auxiliary cell group, the candidate target base station sends an auxiliary node adding request message to the candidate target auxiliary node, wherein the auxiliary node adding request message contains relevant information for identifying a terminal corresponding to the current auxiliary node adding request.
2. The method of claim 1, wherein the source base station is a source master node in a multi-radio access technology dual connectivity, MRDC, scenario and the candidate target base station is a candidate target master node in an MRDC scenario.
3. The method of claim 1, wherein only one cache resource is reserved for a terminal when a candidate target secondary node receives a plurality of secondary node addition requests corresponding to the same terminal.
4. A method according to claim 3, wherein a candidate target secondary node determines that the secondary node addition requests correspond to the same terminal if the relevant information contained in one secondary node addition request message received by the candidate target secondary node for identifying the terminal to which the current secondary node addition request corresponds is indicative of the same terminal as the relevant information contained in the one or more further secondary node addition request messages for identifying the terminal to which the current secondary node addition request corresponds.
5. The method of claim 1, wherein the relevant information for identifying the terminal corresponding to the current secondary node addition request is:
terminal identification information; or,
a combination of source base station identification information and terminal identification information; or,
and the source base station generates identification information capable of uniquely identifying the terminal.
6. The method as recited in claim 1, further comprising:
the source base station configures the terminal to perform relevant measurement and receives a measurement report reported by the terminal;
the source base station sends a switching request message containing conditional switching indication information to the candidate target base station according to the measurement report;
the source base station receives a switching request response message fed back by the candidate target base station, wherein the switching request response message comprises a condition switching and related configuration of the auxiliary cell group, and the related configuration comprises a threshold value for triggering the condition switching and physical cell identification information of the auxiliary cell group.
7. The method as recited in claim 6, further comprising:
and the source base station sends the relevant configuration of the condition switching and the auxiliary cell group to the terminal, wherein the relevant configuration comprises a threshold value for triggering the condition switching and physical cell identification information of the auxiliary cell group, so that when the terminal determines that the access condition is met, random access is initiated to the candidate target auxiliary node.
8. The method of any of claims 1-7, wherein the candidate target base stations are 1 or more; the candidate target secondary nodes are 1 or more.
9. A base station, comprising: a memory; and a processor coupled to the memory, the processor configured to execute a first method of secondary node reservation of resources based on instructions stored in the memory, comprising:
under the condition that a source base station triggers a conditional switching request and a candidate target base station configures an auxiliary cell group, the candidate target base station is used for sending an auxiliary node adding request message to a candidate target auxiliary node, wherein the auxiliary node adding request message contains relevant information for identifying a terminal corresponding to a current auxiliary node adding request, so that the candidate target auxiliary node reserves a part of cache resources for a plurality of auxiliary node adding requests belonging to the same terminal.
10. The base station according to claim 9, wherein the relevant information for identifying the terminal corresponding to the current secondary node addition request is:
terminal identification information; or,
a combination of source base station identification information and terminal identification information; or,
and the source base station generates identification information capable of uniquely identifying the terminal.
11. The base station of claim 9, wherein the first method performed by the processor for the secondary node to reserve resources further comprises:
the method comprises the steps that a source base station is used for configuring a terminal to perform relevant measurement, and a measurement report reported by the terminal is received;
according to the measurement report, sending a switching request message containing conditional switching indication information to a candidate target base station;
and receiving a switching request response message fed back by the candidate target base station, wherein the switching request response message comprises a relevant configuration of conditional switching and the auxiliary cell group, and the relevant configuration comprises a threshold value for triggering conditional switching and physical cell identification information of the auxiliary cell group.
12. The base station of claim 9, wherein the first method performed by the processor for the secondary node to reserve resources further comprises:
and the source base station is used for sending the relevant configuration of the condition switching and the auxiliary cell group to the terminal, wherein the relevant configuration comprises a threshold value for triggering the condition switching and physical cell identification information of the auxiliary cell group, so that when the terminal determines that the access condition is met, random access is initiated to the candidate target auxiliary node.
13. A secondary node, comprising: a memory; and a processor coupled to the memory, the processor configured to execute a second method of secondary node reservation of resources based on instructions stored in the memory, comprising:
under the condition that a source base station triggers a conditional switching request and a candidate target base station is configured with an auxiliary cell group, receiving an auxiliary node adding request message sent by the candidate target base station as a candidate target auxiliary node, wherein the auxiliary node adding request message contains relevant information for identifying a terminal corresponding to a current auxiliary node adding request;
when receiving a plurality of auxiliary node adding requests corresponding to the same terminal, only reserving one part of buffer resource for the terminal.
14. The secondary node of claim 13, wherein the second method performed by the processor for reserving resources for the secondary node further comprises:
and if the related information for identifying the terminal corresponding to the current auxiliary node adding request and the related information for identifying the terminal corresponding to the current auxiliary node adding request, which are contained in one auxiliary node adding request message received as the candidate target auxiliary node, indicate the same terminal, which is contained in one or more other auxiliary node adding request messages, judging that the auxiliary node adding requests correspond to the same terminal.
15. A communication system, comprising: the base station of any of claims 9-12 and the secondary node of any of claims 13-14.
16. A non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of a secondary node reserving resources of any of claims 1-8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111579918.2A CN116347529A (en) | 2021-12-22 | 2021-12-22 | Method for reserving resources of auxiliary node, base station, auxiliary node and communication system |
| PCT/CN2022/113898 WO2023116004A1 (en) | 2021-12-22 | 2022-08-22 | Method for secondary node to reserve resources, base station, secondary node, and communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111579918.2A CN116347529A (en) | 2021-12-22 | 2021-12-22 | Method for reserving resources of auxiliary node, base station, auxiliary node and communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116347529A true CN116347529A (en) | 2023-06-27 |
Family
ID=86874748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111579918.2A Pending CN116347529A (en) | 2021-12-22 | 2021-12-22 | Method for reserving resources of auxiliary node, base station, auxiliary node and communication system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN116347529A (en) |
| WO (1) | WO2023116004A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112016002006A2 (en) * | 2013-08-05 | 2017-08-01 | Fujitsu Ltd | method and device and network configuration system |
| WO2016119210A1 (en) * | 2015-01-30 | 2016-08-04 | Nokia Solutions And Networks Oy | Dual connectivity and handover |
| CN111107591B (en) * | 2018-10-26 | 2021-11-02 | 大唐移动通信设备有限公司 | Method and equipment for switching |
| CN113273247B (en) * | 2019-01-11 | 2023-10-20 | Lg 电子株式会社 | Method and apparatus for performing mobility related to dual connectivity in a wireless communication system |
| CN113115380B (en) * | 2020-01-09 | 2022-07-26 | 大唐移动通信设备有限公司 | Dual-connection switching method, switching equipment and storage medium |
-
2021
- 2021-12-22 CN CN202111579918.2A patent/CN116347529A/en active Pending
-
2022
- 2022-08-22 WO PCT/CN2022/113898 patent/WO2023116004A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023116004A1 (en) | 2023-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11323920B2 (en) | Handover method, base station, and communications system | |
| US9883422B2 (en) | Method and apparatus for enhanced connection control | |
| US11638236B2 (en) | Control channel structure design to support V2X traffic | |
| KR20210020904A (en) | Handover method and apparatus | |
| CN111107593B (en) | Method for link failure recovery, user side equipment and network side equipment | |
| CN111510941B (en) | Auxiliary node adding/replacing method and equipment based on double/multiple connection | |
| CN110868739B (en) | Method executed by user equipment, user equipment and handover command generation method | |
| US9386483B2 (en) | Method and apparatus for performing handover and re-establishment of connections | |
| US20080049677A1 (en) | Mobile communication system, core network node selection method, and base station and mobile station used therefor | |
| CN116458208A (en) | Controlling execution of conditional mobility procedures in wireless communications | |
| US11558925B2 (en) | Notification method and device for execution of PDCP data recovery | |
| CN108370493A (en) | Method, network access point and the mobile station of resource distribution for switching | |
| CN116349387A (en) | Methods, apparatus and computer program products for wireless communication | |
| US11277773B2 (en) | Handover method and apparatus | |
| EP3216268B1 (en) | Modification of handover parameters of a secondary cell for dual connectivity | |
| US20190215734A1 (en) | Method, system and apparatus | |
| CN114175726A (en) | Wireless communication method for mobility control | |
| WO2020221441A1 (en) | Method, apparatus, computer program product and computer program | |
| WO2021184419A1 (en) | Communication method and communication apparatus | |
| CN112449374B (en) | Method and device for determining target main base station and associating target auxiliary base station | |
| CN116584124A (en) | DAPS fault recovery mechanism and MRO mechanism method and device for CHO and DAPS programs | |
| US11259226B2 (en) | Handover method and apparatus in wireless communication system supporting eICIC function | |
| CN116347529A (en) | Method for reserving resources of auxiliary node, base station, auxiliary node and communication system | |
| CN112868253A (en) | Condition-triggered configuration method and related product | |
| WO2024061165A1 (en) | Communication method and communication apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |